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Astron. Astrophys. 328, 339-342


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On the variable spectrum of HD 45677 (FS Canis Majoris)

G. Israelian1 and F. Musaev2

1Insituto de Astrofisica de Canarias, E-38200 La Laguna, Tenerife, Spain
2Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz 357147, Russia

Received 10 June 1997 / Accepted 11 July 1997

Abstract

We have studied high-resolution optical spectra of the peculiar B[e] star HD 45677 (FS CMa) observed during 3 nights in October 1995. The main results of our analysis can be summarized as follows: (1) The complex and variable profiles of H$\beta$ indicate the presence of matter outflow. Three blue-shifted absorption components have been detected. (2) The inverse P Cygni red-shifted profiles have been observed in the Mg II 4481 Å line indicating the infall of cool gas onto the star. (3) These observations confirm our previous estimate (Israelian et al. 1996) for the projected rotational velocity of the order of 70 km s-1. (4) Accreting gas collides with the atmosphere and/or inner disk material producing the so-called filling in by emission effect and/or extended red wings of He I 5876 Å line.

Key words: stars: individual: HD 45677 - stars: Be - stars: peculiar - line: formation - line: profiles

Send offprint requests to: G. Israelian (e-mail: gil@iac.es)


© European Southern Observatory (ESO) 1997

Online publication: October 30, 1997
Last change: March 24, 1998
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